public class Train {
public static void main(String[] args) {
    int accTime = 0;
    for(int step=0;step<240;step++){
        accTime+=28;
        System.out.println("step:"+step +",accTime:" + accTime+"\n");
        System.out.println("累计时间："+accTime/60/24+"天");
    }
}
}
